Built Tough. Engineered to Perform.
When your project demands serious power — whether you're running a pressure washer, a log splitter, or a water transfer pump — having the right engine makes all the difference. The DuroMax XP35HPE is a 999cc, 4-stroke OHV gas engine that doesn't cut corners. Designed with a horizontal shaft orientation and push-button electric start, this powerhouse was engineered for reliability, versatility, and long-term performance.
Whether you're a contractor, a homesteader, or simply someone who refuses to compromise on quality, the XP35HPE delivers the torque and durability you need to get the job done right — every single time.
58 ft-lbs of Torque at 2,500 RPM
The XP35HPE delivers 58 ft-lbs (78 N.m) of maximum torque at 2,500 RPM and a maximum output of 4,000 RPM — raw, usable power that handles demanding workloads without breaking a sweat.
What Sets It Apart
From the air filtration system to the oil bath to the cast iron sleeve, every component on the XP35HPE is designed with one goal in mind: long service life under heavy use.
4-Stroke OHV Engine
Overhead valve design optimizes combustion efficiency, reduces fuel consumption, and keeps operating temperatures under control during extended use.
Push Button Electric Start
No more yanking a pull cord. The key switch electric start system fires up the engine effortlessly, saving time and physical strain every single session.
Forced Air Cooling
Continuous forced-air cooling keeps the engine running at safe temperatures even during prolonged, high-load operation — ideal for professional-grade workloads.
Cast Iron Cylinder Sleeve
A cast iron sleeve provides exceptional wear resistance and heat management, significantly extending engine life compared to standard aluminum alternatives.
Stainless Steel Needle Bearings
Precision stainless steel needle bearings reduce friction, improve rotational stability, and contribute to smoother, more efficient power output at all RPMs.
Dual Air Cleaner System
The semi-dry, oil bath dual air cleaner provides superior filtration in dusty and demanding work environments, protecting internal components from harmful particles.
A Closer Look at the XP35HPE
The design language of the DuroMax XP35HPE reflects its industrial purpose — solid, purposeful, and built to withstand the rigors of outdoor and commercial use without faltering.
The horizontal shaft orientation and the 1-7/16" diameter, 3.01" long shaft with a 1/4" x 2" keyway are precisely engineered for direct compatibility with the most common outdoor power equipment platforms. The 5/8" 18UNF-2B shaft end and counter-clockwise rotation make integration into your existing setup straightforward.
Built for Real Work
The XP35HPE is EPA certified for safe, street-legal use and is approved for a wide range of demanding applications. If you work with serious equipment, this engine fits the bill.
With variable speed control, operators can precisely dial in the RPM needed for each specific application — maximizing efficiency and reducing unnecessary wear during lighter tasks.
Full Technical Specifications
Every specification on the XP35HPE is engineered to a professional standard. Here's what you get under the hood.
| Brand | DuroMax Power Equipment |
| SKU | XP35HPE |
| Engine Type | 4-Stroke OHV |
| Displacement | 999cc |
| Bore | 80mm |
| Stroke | 71mm |
| Compression Ratio | 8.5:1 |
| Max Output | 4,000 RPM |
| Max Torque | 58 ft-lbs (78 N.m) @ 2,500 RPM |
| Shaft Orientation | Horizontal |
| Shaft Size | 1-7/16" Diameter, 3.01" Long, 1/4" x 2" Keyway |
| Shaft End | 5/8" 18UNF-2B |
| Shaft Rotation | Counter-Clockwise |
| Center of Shaft to Base | 5.29" |
| Fuel Type | Standard 87 Octane Gasoline |
| Fuel Delivery | Carburetor |
| Starting System | Electric Start (Key Switch) |
| Engine Cooling | Forced Air |
| Oil Cooling | Pressure and Splash |
| Oil Capacity | 54.1 fl. oz. |
| Recommended Oil | 10W-30 (Blended, Conventional, or Synthetic) |
| Oil Filter | FRAM PH4967, STP S4967 |
| Air Cleaner | Dual, Semi-Dry, Oil Bath |
| Bearing Type | Stainless Steel Needle Bearings |
| Cast Iron Sleeve | Yes |
| Product Dimensions | 19.3" L × 18.3" W × 14" H |
| Product Weight | 157 lbs |
| Dry Weight | 126 lbs |
| EPA Certified | Yes |
| UPC | 811640016067 |
Precision in Every Detail
The DuroMax XP35HPE runs on standard 87 octane gasoline — no premium fuel required. The carburetor-based fuel delivery system is proven, reliable, and easy to service in the field, which means less downtime and fewer headaches when you're deep into a project.
With a pressure and splash oil cooling system and a 54.1 fl. oz. oil capacity, lubrication is consistent across the entire operating range. The engine is compatible with blended, conventional, or full synthetic 10W-30 motor oil, giving you flexibility to use what's available without compromising protection.
What's in the Box
DuroMax keeps it clean and complete. Your XP35HPE package includes:
Warranty & Satisfaction Guarantee
DuroMax stands behind the XP35HPE with confidence. Your purchase is backed by two layers of protection:
Whether something fails under normal use or you simply aren't satisfied, DuroMax has a clear, defined path to resolution. That kind of confidence in a product speaks for itself.
The Verdict
The DuroMax XP35HPE is a serious engine for serious applications. With 999cc of displacement, 58 ft-lbs of torque, a cast iron sleeve, stainless steel bearings, and an electric push-button start, it covers all the bases: power, durability, convenience, and broad compatibility with outdoor power equipment.
If you've been searching for a replacement engine or a core power unit for your next build, the XP35HPE earns its place at the top of the shortlist. It's EPA certified, backed by a 3-year warranty, and built to the kind of standards that contractors and serious homeowners demand.
Stop settling for underpowered or unreliable engines. This is the one built to last.
Ready to power your next project?
DuroMax XP35HPE Engine